Machine for coffee roasting, grinding and cooking



P. BOSAK Oct. 20, 1964 MACHINE FOR COFFEE ROASTING, GRINDING AND COOKING 4 Sheets-Sheet 1 Filed Feb. 11 1963 TO X GRINDE Moran TIMER To X R m K A m5 0 B L w M D. 4 4 & ma 5 X mm 2 RH Oct. 20, 1964 Q BQSAK 3,153,377

MACHINE FOR COFFEE ROASTING, GRINDING AND COOKING Filed Feb. 11, 1963 4 Sheet-Sheet 2 TO WATER SUPPLY VALVE lBG FROM 64 MOTOR 72 CONVEYOR 7o n, 78 I86 3 164 l v'f I 10v 8 |a L I J I 52 04 l A I lB 5 .& l G i I 2ft? 7 [72 l I I I .I a 4 3 I76 84!,

92* 98* m HEATER HEATER v INVENTOR 71;, 9, PAUL. BOSAK Oct. 20, 1964 P. BOSAK 3,153,377

MACHINE FOR COFFEE ROASTING, GRINDING AND COOKING Filed Feb. 11, 1963 4 Sheets-Sheet 3 IN VENTOR.

PAUL BOSAK Oct. 20, 1964 F. 9.05m 3,153,377

momma FOR corms ROASTING, GRINDING AND cooxmc Filed Feb. 11, 1963 I 4 Shuts-Sheet 4 drawn off. Each brewing device is rinsed,

United States Patent This invention relates to the art of coffee brewing apparatus, and more particularly concerns a device for automatically roasting, grinding, and brewing coffee to produce a beverage of superior freshness and flavor.

According to the invention there is provided an apparatus which maybe used in homes, restaurants, hotels and other places for brewin one or more cups of coffee. The apparatus automatically performs an entire cycle of roasting green coffee beans, grinding the roasted beans, and brewing the grind to produce the required quantity of beverage. Gnly enough green beans are dispensed from a sup-ply as are required to brew the desired amount of beverage. By this the consumer is assured of a beverage of superior freshness and flavor. Such beverage quality has not hitherto been available to the public.

The apparatus includes a hopper in which is placed a quantity of green coffee beans. Upon actuation of the apparatus, a predetermined quantity of the beans isfed to a roasting compartment where the beans are roasted. The roasted beans are then passed to a conveyor which carries the roasted beans to a grinder. The beans are ground and the pulverized grind is passed to a coffee percolator or other brewing device which operates automatically to infuse the ground coffee with heated water. The freshly brewed beverage is then available for instant consumption. The brewing device operates for a predetermined time to obtain a beverage of optimum strength. In a modification of the invention, the apparatus supplies freshly roasted and ground coffee to two brewing devices in. turn, when the beverage in each device is spent grounds are discharged, the device is charged with fresh water and ground coffee, and theinfusion is freshly prepared all in an automatically controlled cycle. This arrangement is desirable when large quantities of coffee beverage are to be brewed substantially continuously as may be required in restaurants and other public dining places.

It is therefore one object of the invention to provide apparatus for automatically roasting and grinding coffee beans and brewing coffee beverage therefrom in predetermined quantities. l

Another object is to provide apparatus for continuously roasting green coffee beans, grinding the roasted beans, and brewing coffee beverage from the ground beans.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

in the accompanying drawings forming a material part of this disclosure:

MG. 1 is a vertical sectional view partially diagramice PEG. 3 is a vertical sectional view partially diagrammatic of another apparatus according to the invention.

FIG. 4 is a diagram of the electrical control system of the apparatus of FIG. 3.

FIGS. 5 and 6 are sectional views partially schematic of electrically operated valves employed in the apparatus.

FIG. 5A is a perspective view of the cylindrical dispenser. FlG. 6A is a perspective view of the roaster drum. 7

PEG. 7 is a View similar to FIG. 1 showing a coffee brewing apparatus embodying another modification.

Referring to FIG. 1, there is shown in apparatus 19 a funnel-like hopper ll into which green coffee beans 12. can be lotded. The hopper is supported by a neck 14 at the upper openside of a cylindrical dispenser 16 for the beans. The dispenser has a generally cylindrical body which is axially horizontal with fiat vertical end walls lb. A rotor having multiple vanes or blades 20 is r-otatably mounted in the dispenser. The rotor has a shaft carrying the blades. The blades are angularly disposed to each other to define compartments between each pair of blades, the end walls of the dispenser and the cylindrical body of the dispenser. The rotor is driven by a motor 24 via a suitable speed reducing gear train indicated schematically in the drawing.

At its lower side, the dispenser opens via a narrow neck or passage Zeinto the upper side of an axially horizontal cylindrical roaster drum 28. Inside the drum is a rotor including a shaft 32 driven by a motor 34 and suitablespeed reducing gear train. Blades 36 extend radially of the shaft in the drum and define compartments therebetween with outer flat end walls so and the cylindrical body of the drum. Underneath the drum is a roaster heater.

mounted on a ceramic base as in a casing 48. While an electric heater is shown, any other suitable form of heater may be used.

A duct Stl opens laterally of the drum into one side of a conveyor housing 52. The housing is a generally rectangular hollow body with flat opposing front and rear 'walls 54- and flat lateral walls 55, 56. Duct 50 opens through the wall 55 near the bottom end thereof. A pair of axially horizontal shafts 57, 58 arerotatably mounted on the walls 54 near top andbottom ends of the conveyor. A flexible belt 59 is entrained on rollers 69, 62 carried by the two shafts respectively. Flat blades or plates 64 extend outwardly of the belt and define a plurality of compartments between the walls 54, wall 55 or 56 and the belt. A motor 61 including a speed reducing gear train drives shaft 57 and belt 59.

p A duct 63 is connected to the conveyor housing at an opening 65 in wall 56. The duct descends to upper chamber 66 of a grinder. This-grinder has a rotor 79 driven by a motor 72 via a shaft 76. The rotor turns in a grooved grinder compartment 78 and grinds coffee beans therein. The grinder may be of a type such as described in Patent 1,189,035.

The grinder has an open bottom which discharges ground coffee into a basket 80 carried on an upright tube 81 in a percolator container 84-. The bottom 82 of the basket is perforated so that hot Water discharged out of the open top of the tube drains through the ground coffee in the basket. At the top of the tube is a conical baffle 35 which prevents ground coffee from falling into This heater includes a heater element 3 the tube while serving as a deflector for hot water rising up out of the tube. The baffle $5 is supported by stays 86 above the tube. The tube is carried by a percolator base 8% having a hole tl through which hot water in the container enters. A faucet 92 near the bottom of the container is used to draw oil? brewed cofiee.

The container rests on a stand carrying a heater which includes a heater element 93 on a ceramic base 99. Any other suitable heater may be used. The container has a movable top 95 with a depending cylindrical flange 93 at neck 9?. of the container. The top can be raised to permit the container to be moved laterally oil of the stand 94* for replacement by another container when desired.

FIG. 2 shows a control system 1% employed for the apparatus of FIG. 1. This system includes a timer Th2 having a circular insulated timer disc on which is a rotary electrically conductive arm tilt: carried by a rotary shaft 1'98. The shaft is driven by a timer motor 110. A knob 112 on the shaft permits manual movement or positioning of the arm at any desired position around the disc. On the disc are circumferentially spaced electrically conductive sector plates lid-H3. These plates are contacted by a slider contact carried by arm 11%. The slider contact moves along scale 119 on arm 1%. Arm 1% is spaced above the plates and does not contact them. The arm does contactat its end a fixed electrical contact lug i223 located at the pe riphery of the disc. Lug 122 is located between the spaced plates lid and lid.

Plate 114 is connected to the green bean feed motor 24. Plate 115 is connected to both the roaster heater 44 and the roaster motor Plate lid is connected to conveyor motor til. Plate llll'i' is connected to the grinder motor '72. Plate 118 is connected to the brew heater All the motors and heaters have terminals 125 which terminate at terminal X of a suitable electrical power supply 12%. In series with line 123 of the power supply is a switch 1.36. Line 128 is connected to a wiper contact 132 which makes continuous contact with the arm run. A relay 13 has its coil terminal A connected to terminal X and its other terminal B is connected to contact lug 122. The relay has a fixed contact 136 connected to power line 123$ and a movable contact 133 conected to the timer motor lltt.

In operation of the system 1% and the apparatus 159, an operator will set slider 126 along arm at any indication of scale indicative of the number of cups of coffee to be brewed. This may be as little as one cup, and may be as much as eight cups. if a larger quantity of coffee is to be brewed, the apparatus may be constructed in a larger size for this purpose. Slider 12th is shown set at numeral 5 on the scale 119 indicating that four cups of coilee are to be brewed. The switch we will be then manually closed and the arm W6 will be moved manually by turning knob 112 so that arm res passes contact 122. At this instant the timer motor lltl will be energized and relay 13 3- will be deenergized. The motor then rotates arm 11% at a predetermined constant speed. The motor ilti will include a speed reducer so that the arm 1% will complete a revolution in approximately an hour.

It will be noted that sector plate 114 is step shaped so that at its radially outer end it extends through a smaller number of degrees of arc than at its radially inner end. Thus at outer index line 1 the slider 129 contacts plate 114 for the shortest length of time while at the inner index line 5 slider 120 contacts plate 114 for the longest length of time. While slider 12d contacts plate lld, the motor 24 is energized and the green beans are passed from hopper 11 through dispenser drum 16 to the roaster drum 2s. The quantity of beans passed will depend on the length of time motor 24 is energized. The motor 24 is deenergized and roaster motor 34 is energized when the arm tile and slider 12d pass to plate 115. The roaster heater it is also energized and roasting takes place for a length of time depending on the radial position of slider 12th on arm 1%. Plate is step shaped and its radially inner step 115' extends the shortest number of degrees of arc while intermediate step lllS extends the greatest number of degrees of arc.

The green beans in the roaster drum 28 will be roasted for a predetermined length of time and the beans will be passed on to the conveyor 55. The conveyor motor (fill will be energized via its step shaped plate 116 and will pass the roasted beans to the grinder chamber as. Then grinder motor '72 will be energized via its step shaped plate to grind the roasted beans. Grinding is completed by the time the grinder motor stops. When the motor '72. stops the heater 93 is energized via its 'ep shaped plate llld. Container 84- has previously een filled with fresh water. The ground coffee is deposited directly into basket St}. The water is heated by heater 5% and the hot water percolates through the collee grounds for a predetermined length determined by the arcuate length of the plate 118 at which slider llZt) is set. When the arm the passes the plate 113 it encounters contact 122 which closes the circuit of relay 134-. This opens the timer motor circuit via normally closed contacts 136, 133 and the timer motor stops at this point. The brewed coffee can be drawn ofi via faucet 92 after brewing is completed. The container of brewed coifee can be removed and another container of fresh water can be placed on stand 94 to begin another cycle of coffee bean dispensing, roasting, grinding and blending immediately; or the two containers for liquid coffee can be mounted on the heaters, and before the first container is drawn 0d, the second container can be put on for immediate brewing of fresh coffee.

In FIG. 3 is shown part of another coffee brewing apparatus in which the hopper, bean dispenser, roaster, conveyor and grinder are the same as illustrated in FIG. 1, and are therefore omitted from FIG. 3. The grinder is driven by motor 72 and the ground coffee drops down through a duct ldtl to either of two branch chutes 152 or 152 A baffle or valve plate is pivotally mounted in the duct T59 on a shaft 151 and is driven by a sole noid motor 162 either to the right or left as seen in FIG. 3. If the plate res is turned to the right as shown, the ground coifee will drop down through chute 152 If the plate res is turned to the left the ground coffee will drop down through chute 152*. Each time the motor is actuated it changes the position of the plate 16d either from right to left or from left to right. As the baffle plate tee is turned fully to the right or left it closes push button switches 164 165* or 164*, lds

The necks 166 166 of two containers 84 M are connected to the respective chutes. The containers are supported on'hea-ters 98 and 93 respectively. In the containers are cylindrical baskets lllti ll7tl supported by radial stay bars 172. The perforated bottom plates 174 of the baskets are supported on hinges 171 and are held closed by springs 176. When the baskets are full of ground coffee G the plates 1'74 are in the closed positions shown in the drawing.

At the bottoms of the containers are drain pipes ll75 connected to an electrically operated two-way drain valve 173 which opens either of the pipes so that the open pipe is connected to common drain 177. FIG. 5 shows pipes 175 1175 connected to the body of valve 173 in which is a movable magnetic piston 273 which can be actuated by electromagnet 274 or 1274 depending on which electromagnet is energized. The drain 177 is cut oil from the pipes 175 1175 in the neutral position of the piston. The picton 273 normally assumes a spring biased neutral position when neither electromagnet is energized.

A float switch 179* or 178 is provided in each container. The switch is actuated when the float 179 of 184 iscut off from pipes 186 and 186'.

the'float switch is lowered as shown in container 84 and when the float is raised as shown in container 84 A water supply tube 1% is provided in each container. The upper end of the tube is bent and discharges hot water into the basket 170 or 170 The tubes 186 are carried by curved base plates 1631 in which is a hole 182 to admit hot water.

At the top of each container is a perforated pipe ring 185 or 185 connected to water supply pipe 184 via a branch pipe 186 or 186 and an electrically operated valve 186. Valve 186 as shown in FIG. 6 has a body 286 in which is a slidable piston 288 normally assuming a spring biased neutral position in which supply pipe An electromagnet 290 will move the piston to connect pipe 184 to pipe 186*- and electromagnet 290'" will move the piston to connect pipe 184 to pipe 186. When the electromagnets are deenergized the water supply is cut oif from the pipes 186*, 186 Each container is provided with a manually operable faucet 92 or 92 for drawing off brewed coffee.

FIG. 4 shows control system 100 diagrammatically. Parts which correspond to those of system 1100 are identically numbered. Two timers 1&2 and 2% are provided. Timer 102 has an insulated plate 104 provided with arcuate contacts 114118 plus an additional contact terminal X of power supply 126. The power supply has a manually operable switch 130' for turning the system on and off.

On insulated plate 104 is a rotary conductive arm 106 carried by a shaft 103. Timer motor 110 drives shaft 108. A wiper contact 132 makes continuous contact with ring 106 mounting the arm res on the shaft. Contact 132 is connected to contact 136 of double relay 134 134 Movable contact 138 of the relay is connected to power line 126' and to the coil of relay section 134*. The coil of relay section 134 is also connected to a contact 206 on insulated plate 2% of timer The coil of relay section 134i is connected between contact 122 and power line 129; The timer motor 110' is also connected to contact 136.

Switch contacts 210* of float switch 178 and switch contacts 211 of float valve 178* are connected in parallel between the timer motor 212 and power supply 126'. The timer motor 212 drives shaft 214 carrying a radial contact arm 216. A wiper contact 217 makes continuous contact with arm 216 and is connected to power line 129. On plate 2% is a circumferentially long arcuate contact 218 connected to the coils of electromagnets 296 29G The electromagnet coils are connected to two contacts of push button switches 1655 and 165 respectively.

' The power supply line 126 is connected to each of the switches 165 165 Drain valve 173 has electromagnet 274 connected to a contact of push button switch 165* while electromagnet 274. is connected to a contact of switch 165 The electromagnets are also connected to a contact 226 on disc 208. Contact 226 is adajcent to and is shorter than contact 218.

The chute motor 162 includes pivotally mounted shaft 151 on which is supported plate 160. The shafthas a depending radial arm 244) formed of magnetic material and disposed to be attracted by either of two electromagnets 242* or 242 axially aligned'with each other. Coil 243 is connected to contacts21tl of switch .17? and coil 243 is connected'to contacts 211 of switch 178*.

In operation of the apparatus 10* and control system ltiil suppose the apparatus is in the condition shown in FIG. 3. The beverage has been drawn out of container 84 through faucet 92 and the float 179 is lowered. This causes the closing of contacts 211*, 211 by the movable shorting bar in the switch 178*. Switch 130 will be manually closed to apply power to the system. The switch contacts 211 when closed energize coil 243 and electromagnet 242 will attract bar 240 to swing the plate 16% to the left indicated by the dotted line in FIG. 3. At the same time plate 150 will close switches 164 165 Switch 16 tis in circuit with heater 9% The timer motor 212 is energized via contacts 211, and the shaft 214 and arm 216 are driven. The drain valve 173 opens pipe 175 since electromagnet 2'74 is energized via contact 226. At the same time valve 1% is operated to connect the water supply pipe 154 to ring 185*. a

The water valve electromagnet 29h is energized via contact 218. The arm 216 makes contact with contact 218 during rotation of the arm. When the arm 216 leaves contact 218 the electromagnet 29th is deenergized and the piston 288 returns to its neutral position cutting off the water supply. While the water is flowing it flows down the sides of the container 34 to rinse it. The water may initially overflow the basket carrying the grounds with it. In any event the spent grounds and excess Water will all be drained out of open pipe 175* The drain Valve will close after a predetermined time as arm 216 leaves contact 226. Then the container 84* fills with fresh water. The water is cut off when the container is filled to desired level. As the water level rises it raises the float which opens switch 17 However, the timer motor will remain energized through a holding circuit connection 249 connected to contact 18 by wire 24-9 and to timer motor by wire 212. As arm 216 leaves contact 218, the motor 212 is cut off. The arm 216 leaves contact 218 due to its inertia at the instant motor 212 is cut off. When switch 178 opens, the electromagnet 241i is deenergized but the plate 169 remains in'place to the left with arm 24% against the bar 242 and will remain there until electromagnet bar 24.2 is activated.

When arm 216 reaches contact 2%, relay section 134 IS activated and contacts 136, 138 close to energize the timer motor 11h. Relay section 134 is deenergized. When timer motor 113" starts arm Mid encounters the bean feed motor contact 114 and the beans are fed to roaster drum as explained in connection with FIG. 1. When arm 1% leaves contact 114 it reaches contact 115 and both the roaster heater 44 and roaster motor 34 are energized. When arm 1% reaches contact my the conveyor motor dl is energized. When arm 1% reaches contact 117 the grinder motor is energized.

Ground roasted coffee then passes down the open chute 152 When arm 1% reaches contact 118 the brewer heater )8? is energized, since switch lod has previously been closed by plate in the left position of FIG. 3. Percolatingof the beverage in container 84 continues until arm 1% leaves contact 118. The beverage is then ready for service and may be drawn off through faucet 92 When arm 1% reaches contact 122' the relay section 134- is energized and the contacts 136, 133 are opened to stop the timer motor 116. The arm 166 moves oif contact 122 due to inertia leaving the 7 contacts 1%, 138 open and the timer motor 110 oif.

When all beverage has been drawn otf'frorn container 34* it isthen washed, filled with water, and fresh roasted and ground coffee is supplied in the manner described in connection with container 34* above. Heater 28 is energized as plate 16% is turned to the right upon the operation of float switch 178 and valve 173 opens drain pipe 175 while closing pipe 175.

The apparatus of FIGS. 3 and 4 operates to keep freshly brewed coffee in either one of the containers while brewing coffee for the other container. If desired, the timer 12of apparatus ltlrnay be substituted for'the timer 102.

This arrangement will permit an adjustable amount of coffee to be brewed for each container instead of the fixed amount determined by the contacts 114 -118. If desired, gas heaters having electrically controlled valves can be substituted for the electrical heaters 44, 98, and 98 The modified form of coffee brewing apparatus shown in FIG. 7 differs from the apparatus 16 in that a funnel-like hopper 3% and an associated dispenser 16 are interposed between the duct 63 leading from the conveyor housing 52 and the grinder compartment 78*. The purpose of the hoper 3% is for holding a supply of roasted coffee so as to have a supply on hand for immediate use. The dispenser id is constructed similarly to dispenser 16, having a rotor including multiple vanes of blades 2ft, the rotor being operatively connected to the motor 24.

In this form of apparatus It)", the grinder has a. single groved grinder compartment 73 and the roasted coffee beans from the hopper 31% are ground therein by means of a rotor 74B driven by a motor 72 via intermeshing gears 3&8, 316 on shafts 312, 314, respectively.

In all other respects, the apparatus 10* is similar to the apparatus It) and similar reference numerals are used to indicate similar parts.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may be made within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent 1. An apparatus for brewing beverage coffee, comprising a holder for a supply of green coffee beans, a roaster drum connected to said holder, motor driven means for feeding a certain quantity of beans to said drum, a first heater adjacent to the drum for roasting the green beans in the drum for a predetermined length of time, motor driven means for discharging roasted beans from said drum, a motor driven conveyor connected to the drum for receiving the discharged roasted beans, a motor driven grinder connected to said conveyor for receiving roasted beans therefrom and pulverizing the roasted beans,

a pair of beverage brewing devices, a main duct connecting the grinder to said device for receiving coffee grounds from the grinder, a pair of duct branches, valve means in the main duct for diverting the coffee grounds from the grinder to either one of the duct branches, a pair of brewing devices including liquid containers open to said duct branches respectively for alternately receiving grounds therefrom, and a pair of other heaters adjacent to the respective brewing devices for heating liquid therein for a predetermined length of time to brew said beverage.

2. An apparatus for brewing beverage coffee, comprising a holder for a supply of green coffee beans, a roaster drum connected to said holder, motor driven means for feeding a certain quantity of beans to said drum, a first heater adjacent to the drum for roasting the green beans in the drum for a predetermined length of time, motor driven means for discharging roasted beans from said drum, a motor driven conveyor connected to the drum for receiving the discharged roasted beans, a motor driven grinder connected to said conveyor for receiving roasted beans therefrom and pulverizing the roasted beans, a pair of beverage brewing devices, a main duct connecting the grinder to said devices for receiving coffee grounds from the grinder, a pair of duct branches, valve means in the main duct for diverting the coffee grounds from the grinder to either one of the duct branches, a pair of brewing devices including liquid containers open to said duct branches respectively for alternately receiving grounds therefrom, and a pair of other heaters adjacent to the respective brewing devices for heating liquid therein for a predetermined length of time to brew said beverage, and timer control means in circuit with the motors and heaters for energizing each of the motors and heaters in turn in a predetermined sequence.

3. An apparatus for brewing beverage coffee, comprising a holder for a supply of green coffee beans, a roaster drum connected to said holder, motor driven means for feeding a certain quantity of beans to said drum, a first heater adjacent to the drum for roasting the green beans in the drum for a predetermined length of time, motor driven means for discharging roasted beans from said drum, a motor driven conveyor connected to the drum for receiving the discharged roasted beans, a motor driven grinder connected to said conveyor for receiving roasted beans therefrom and pulverizing the roasted beans, a pair of beverage brewing devices, a main duct connecting the grinder to said devices for receiving coffee grounds from the grinder, a pair of duct branches, valve means in the main duct for diverting the coffee grounds from the grinder to either one of the duct branches, a pair of brewing devices including liquid containers open to said duct branches respectively for alternately receiving grounds therefrom, and a pair of other heaters adjacent to the respective brewing devices for heating liquid therein for a predetermined length of time to brew said beverage, each of said brewing devices further including means for filling the containers with water, means for draining water out of the containers, a first electrically controlled valve controlling supply of water to the containers, a second electrically controlled valve controlling the drain means, and timer control means in circuit with the duct valve means, the first and second electrically controlled valves, the motors, heaters, valve means, and valves are energized in a predetermined time sequence after the beverage is drawn off from any one of the containers.

4. An apparatus for brewing beverage coffee, comprising a holder for a supply of green coffee beans, a roaster drum connected to said holder, motor driven means for feeding a certain quantity of beans to said drum, a first heater adjacent to the drum for roasting the green beans in the drum for a predetermined length of time, motor driven means for discharging roasted beans from said drum, a motor driven conveyor connected to the drum for receiving the discharged roasted beans, a motor driven grinder connected to said conveyor for receiving roasted beans therefrom and pulverizing the roasted beans, a pair of beverage brewing devices, a main duct connecting the grinder to said devices for receiving coffee grounds from the grinder, a pair of duct branches, valve means in the main duct for diverting the coffee grounds from the grinder to either one of the duct branches, a pair of brewing devices including liquid containers open to said duct branches respectively for alternately receiving grounds therefrom, and a pair of other heaters adjacent to the respective brewing devices for heating liquid therein for a predetermined length of time to brew said beverage, each of said brewing devices including means for filling the containers with water, a first electrically controlled valve limiting supply of water to only one of the containers at a time, means for draining Water out of the containers, at second electrically controlled valve limiting drainage of water out of the containers to only one of the containers at a time, switch means controlling the energizing of the other heaters and limiting heating of the same to only one of the other heaters at a time, and timer control means in circuit with the duct valve means, the first and second electrically controlled valves, the motors and heaters, whereby the'motors, the first heater, the valves, valve means and only one of the other heaters at a time are energized in a predetermined time sequence after the beverage is drawn off from any one of the containers.

5. An apparatus for brewing beverage coffee, comprising a holder for a supply of green coflee beans, a roaster drum connected to said holder, motor driven means for feeding a certain quantity of beans to said drum, a first heater adjacent to the drum for roasting the green beans in the drum for a predetermined length of time, motor driven means for discharging roasted beans from said drum, a motor driven conveyor connected to the drum for receiving the discharged roasted beans, a motor driven grinder connected to said conveyor for receiving roasted beans therefrom and pulverizing the roasted beans, a beverage brewing device including a liquid container adjacent said grinder for receiving coffee grounds therefrom, a second heater adjacent to said device for heating said liquid for a predetermined length of time to brew said beverage, a timer device in circuit with the bean feed motor, the bean discharge motor, conveyor motor, grinder motor, and the heaters for energizing each of the motors and heaters in turn in a predetermined sequence, said time device including sector contact plates on an insulated discconnected to the motors and heaters respectively, a contact arm rotatable over said disc, a timer motor driving said arm whereby said arm contacts said plates in turn for energizing said motor and heaters in said sequence, and a hopper for receiving roasted beans and a dispenser associated with said hopper interposed between the conveyor and the grinder.

References Cited in the file of this patent UNITED STATES PATENTS 2,906,193 McCauley Sept. 29, 1959 

1. AN APPARATUS FOR BREWING BEVERAGE COFFEE, COMPRISING A HOLDER FOR A SUPPLY OF GREEN COFFEE BEANS, A ROASTER DRUM CONNECTED TO SAID HOLDER, MOTOR DRIVEN MEANS FOR FEEDING A CERTAIN QUANTITY OF BEANS TO SAID DRUM, A FIRST HEATER ADJACENT TO THE DRUM FOR ROASTING THE GREEN BEANS IN THE DRUM FOR A PREDETERMINED LENGTH OF TIME, MOTOR DRIVEN MEANS FOR DISCHARGING ROASTED BEANS FROM SAID DRUM, A MOTOR DRIVEN CONVEYOR CONNECTED TO THE DRUM FOR RECEIVING THE DISCHARGED ROASTED BEANS, A MOTOR DRIVEN GRINDER CONNECTED TO SAID CONVEYOR FOR RECEIVING ROASTED BEANS THEREFROM AND PULVERIZING THE ROASTED BEANS, A PAIR OF BEVERAGE BREWING DEVICES, A MAIN DUCT CONNECTING THE GRINDER TO SAID DEVICE FOR RECEIVING COFFEE 